Ignition device



Octc 4,

W. HERMANN lIGNITION DEVICE Filed Sept. 20, 1924 le/"MRR, @MM

W. HERMANN I. IGITION DEVICE Filed sept. 2o. 1924 2 Sheets-sheet 2Patented Oct. 4, 1927.

' WOLFGANG HERMANN, or caricano, rLLrNors, .assrerion T omer.

'ro Maren v 'sieno-ianrfrns MANUFACTURING'COMPANY, or onicneo, rnnrnes.n conroaerroiv oFILi'iINo-Is.

IGNETION DEVICE. I

Application filed Septemberf, 1924.l Serial No. 738,956.

Thisfinvention relates particularlyto ignition devices for 4use Vinconnection with` electriccigrar lighters, and thelike.,xfilfheprimaryobject is `to provide a-simple and Limproved vdevicewhose parts can be formed and assembled with great facility.V

.A further Objectis to provide a ventilated `body of yinsulationmaterial which serves as .a mounting `for the `resistance element andthe circuit closing device. A

The invention is .illustrated in its `preferred embodiment yin .theaccompanyingr drawings,in Which- Figure l.illustratesbrokenlycord-Winding' v.means and a cigar lighter associated therewith` thedevice :being welladapted to serve as a: cigar lighter for use inconnection with :an automobile; Fig. 2, .an enlarged sectional View ofthe ignition device, `or tip, shown .in Fig. l; Fig. 3,:a1sectional'viewyof a `suit able form ot handle for .the ignition y'device; Figr 4, afront side view of the ignition device.; Fig. 5, .a rear side view ofthe same; Fig. 6,3 rear view of the insulation body employed andthesocket member with whichl Y itisequipped; F ig 7 a view of a spider-likedevice.

' comprises astubular member Z having secured guard, or protecting;`plate, .with which the resistance -elementfisequipped ;.Fig.k 8, ay viewof a spider-like insulation member; Fig.9, .a- .view/oa` Washer,employed in the resistanceelement assemblyFig l0, a view of the`resistance wire; F igll. a view of an insulation. member employed; Fig..12. al rear view of amodiiied form .of .the ignition device; .Figlasection taken as indicated at line 18 ,of Fig. l2; and Fig. 1.4,.arbroken prospeo .tiveview of aspring segment 4employed as a circuitcloser in .the .modified form of the In the construction illustrated inFigs4 l to ll inclusive', A represents a portion of a vcordswindin-gdevice mounted on a dash B; `C represents a. handle, or socket-device,ywith which is connected arcord l which includes l the-electric wires;and D represents the iin- .proved ignition device which `is Iadapted tothe handle,` ,or socket, C.

TheV device C, vin Ythe A'illustration' given,

inlon'e tliereoin metallic socket 3, 2in

fber 3.

the illustration fi/viven,` the socketS isgpro-` vided internally with athread 3a adapted to receive the threaded shank of the ignition device.The member ..3 is shown provided with aniinsulated central contact-4 theWires la and lb 'of the cord are shown connected, respectively. with thesocket memberg and thecentral terminal 4f. Y- r The :ignition device D-preferablysoonprises an insulation body 5. Thisbody zis inV the vformof a .suitably shaped disk 5` having a vfront peripheral liange bqand arear peripheral flange 5'?. The fdiskziS fillther provided at its:trontside witha ,central lhub-like projection 5d andat. its lrear vSide`the disk has afcentral stem 5e which is iencircled by ametallicsoketfmember The member 6 preferably is secured in position inthe operation' of molding the body'. The member .6 preferably has anexterna-l flange 6@ at its front end which is'embedded so as to lieliush with the rear surface-ofthe disk portion 5'L1 of the insulationbody. The member 6 is of'general tubular form' and Apreferably has ataper bore 161?, .which, :inI` the soldini; operation. becomes `filled`with the .insulation material. The bore converges forwardly, andthusthe shank 5e is enlarged at .itsrear end so that .it-cannot be forcedthrough .the tubular member whentthe ignition device is-screwed `intothe sooketmeml VThe' resistance element assembly is-design nated 7. Itcomprises a spiral lresistance wire 7a, an inner insulation diskbyanfouter spider-like insulation disk 7, airing Winton' posed betweenthe insulation disks', Land a spider-like guard, or retainer,Zewhicliimay be l'orm'ed of sheetemetal. Thedisks 7b and 7C may beformed of mica. Thevspiral :re-v sistancewire .7a has a `,ireamvardlyturned' outer extremity Tf and a rearwardly turned inner extremity 7g.The inner extremityextends intoia-small tubular member 8 Iwhich forms apart of the central terminalfo-:the device, `the rear end of the member8 re` ceiving a screw 9 which extends throughthe insulation shank 5eandvwhose head is adaptev ed 'to contact with-the central contest of thedevice (la The extremity' T5 the Wire is secured in the tubular memberlby a wedge-pin 10. The parts are secured together by bending the arms 11of the blank 7e rearwardly about the edges of theinsulation disks andthe interposed ring and bending the extremities of the arms inwardly soas to engage the rear surface of the underlyirg disk 7b.

ithin the front flange b of the insulation body 5 there yis afforded anopen chamber 12 which is adapted to receive the resistance elementassembly. The central portion of the disk 7b is provided with al per-'foration 13 throuoh which the sleeve 8 extends, and the sleeve 8preferably is provided with a flange 8a which overlies the centralportion' of the disk 7b. The wire ele- Ament 7al lies within the planeof the ring 7rx and between the planes of the mica disks. The insulationbody 5 is provided .with an annular recess 14 which encircles thehubportion 5d, so that an air space is provided -back'of the plane ofthe resistance element assembly.

The insulation body 5 is further provided kwithin the rear flange 5Cwith a shallow chamber 15 in which the spring circuit closer is mounted.There extends through thedisk 5a an eccentric metal bushing 16. Theouter extremity 'Tf of the resistance wire extends through this bushingand is secured by a drop of solder 17.

' The insulation body 5 is further provided with eccentric y Ventilatingperforations 18 which are located inside of the flanges of the body.Located in the chamber 15 is a spring segment 19 which has one endconnected.

'provided, and having at the other with the rear end oi' the bushing 16and thc other end connected with a metallic push button 20 which isadapted to work freely through a perforation in the rear flange 5 of thebody 5. In the illustration shown in Figs. 2 and 5, the spring segment19 is in the form of a curved piece of wire having at one end a hook 19awich engages a slot with which the rear end of the bushing 16 is end ahook 19b which engages an annular slot with which the inner portion ofthe push button 2() is provided. In the form of device being described,the spring segment 19 serves to hold the bushing 16 in position and alsoto hold the push button 20 in position` The spring normally holds thepush button out, or away `from the circuit closing position. When thebutton is pressed., its inner end makes contact with the ange 6' of the`metallic socket member 6, and thus the circuit is closed.

In the modification shown in Figs. 12-141, the tip, or ignition device,is designated D. The device is like the one previously described, exceptthat the bushing 16 is replaced by a metal insert 21, and the wirecircuit closer 19 is replaced by a sheet-metal spring segment 22. Oneend of the segment is secured, by a tubular rivet 23, to the insert 21.The other end of the segment is provided with a- U-shaped yhead 22a, oneflange of which is provided with a perforation 22h to which is securedthe inner end of the push button 20a. The pushr button extends laterallythrough a perforation in the wall of the insulation body. Normally, thecircuit is open, but when the push button is pressed inwardly, thecircuitcloser 22 is forced into contact with the iange 6aL of the socketmember 6.

Each of the constructions described provides a main insulation bodywhich serves a mounting for the resistance element and switch device andwhich is directly provided with a shank, or socket member. adapted forconnectionwith any suitable socket device, such as the deviceillustrated in Fig. 3. VThe insulation body, or tip, is itself of acomposition adapted to resist the'transmission of heat. ln addition, theIbody is well ventilated. Such a construction enables the tip to be heldin the hand while the ignition device is being` used for lighting acigar, for example. The construction renders entirely practicable theuse of a switch device .in connection with the tip itself, anddistinguished from the usey of a switch in the handle, or a switch inconnection with the mrd-winding device.

The foregoing detailed description has been given for clearness ofunderstanding only` andV no unnecessary limitations should he understoodtherefrom, but the appended claims should be construed as broadly aspermissible in view of the prior art.

That l regard as new, and desire to secure by Letters Patent, is:

1. A device of the character set forth com prising an insulation diskequipped with front and rear flanges and affording front and rearchambers, a metallic socket member projecting from the central rearportion of said body, said socket member being provided with a taperbore, insulation material in said bore, a centralterminal extendingthrough said body and through the insulation in said socket member, aneccentric metallic insert extending through said insulation body, aresistance element mounted in the front chamber and having an innerextremity connected with said central terminal `and an outer extremityconnected with said eccentric insert, and affcircuit closing de1 vicemounted in the rear chamber and adapted to effect closing of thecircuitfbetween said eccentric insert and said socket member.

2. A device of the character set forth comprising an insulation diskequipped with front and rear flanges and affording front and rearchambers, a metallic socket member projecting from the central rearportion of Said body, said socket mernber being provided With a taperbore, insulation material in said bore, a central terminal extendingthrough said body and through the insulation in said socket member, aneccentric metallic insert extending through said insulation body, and aresistance element mounted in the front chamber and having an innerextremity connected with said cenl0 tral terminal and an outer extremityconnected with said eccentric insert.

WOLFGANG HERMANN.

